Acrylic resins were first introduced as a denture base material in______________?
Correct answer: B. 1937
- A. 1925
- B. 1937
- C. 1951
- D. 1956
Explanation
Polymethyl methacrylate acrylic resin was introduced as a denture-base material around 1937, replacing earlier materials such as vulcanite. This date is a standard historical anchor for denture-base polymers.
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